NX Technologies R300 Motor Controller for Beyond AXM3

The NX Technologies R300 is an 800 V-class motor controller from NX Technologies in San Sebastián, Spain, and it's the controller Beyond Motors pairs with the AXM3. We sell it as Beyond's plug-and-play package: Beyond calibrates the R300's settings to the AXM3 and supplies it with its wiring, so the motor and controller arrive set up to run together.

The R300 runs from a 48–800 V DC battery, delivers up to 560 A rms, and is rated for 300 kW continuous at 800 V, in a 6.7 kg (14.8 lb) housing. It controls torque, speed or Id/Iq, reads resolver, encoder or xMR position sensors with automatic sensor calibration, and is built on ASIL-D rated control hardware with active short-circuit protection, ready for ISO 26262 functional safety and ISO 21434 cybersecurity.

The calibration is usually the slowest part of a conversion. A controller paired with a third-party motor has to be characterized and its position sensor aligned before it can make full power. With the plug-and-play package, Beyond has already done that for the motor you're buying.

It's matched to the AXM3 in our catalog, with the low-voltage (400 V DC) winding and the RM44SI encoder. The motor and controller come together in the Current EDU and the Flux Drive System, or you can buy them on their own.

What you'll also need: the AXM3 motor, a coolant loop, DC cables from your battery, a precharge circuit, and a VCU or other controller to command it.

Notes from the Current EV team

Order it with the motor: the calibration is done for one AXM3, so order the controller and the motor together. If you already have an AXM3 from Beyond, tell us its configuration before you order.

Cooling: plumb the controller into the same water/glycol loop as the motor.

Precharge: plan a precharge circuit and contactors in your battery system or PDU before the controller first sees pack voltage.

Setup tools: NX's DeveLinkSTUDIO software connects to the R300 over USB, CAN, Ethernet or UART/RS-232 for diagnostics and calibration.

Lead time and shipping: Beyond Motors supplies the controller with the motor from Slovenia. Shipping is not charged at checkout: after you order, someone from our team will contact you to confirm the lead time and to arrange and quote freight.